Door lock and switch.



E. E. SAPHORB.

DOOR LOCK AND SWITCH.

APPLIGATIQN FILED MAR. 1a, 1909.

Patented Feb.s,191o.

2 SHEETS-SHEET 2.

ever, the switch is thrown open, as shown in Fig. 2, then the hoisting mechanism is stopped and the car cannot be started until the switch is again in the closed position shown in Fig. l.

The operation is as follows: When the several parts are in the position shown in Fig. l, the door C is locked against opening by the bolt D engaging the keeper plate F of the keeper casing F.' Now in case the passenger at the landing outside of the door C turns the knob S at the time the car A is not at this landing, then the arm R causes the push bar Q to push the striking bar to the right, thus imparting aswinging motion to the lever H turning on the pin G as a fuleruin, as the releasing bar G is held against movement by the bolt D held in a `shot out position by its spring D. Now the swinging motion given to the lever Hby the striking bar P causes a swinging of the arm I to the position shown in dotted lines in Fig. l, and the motion of the arm I is transmitted to the shaft J which by the arm K' and the link L imparts a swinging motion to the arm N to the right, but as the car is not at the landing, the cam O does not engage' the friction roller N2, and consequently the parts remain in this position, that is, the door C remainslocked. In other words, the turning of either knob S at the time the car A is not at 'the landing does not unlock the ioor .C. In case, however, the knob S is turned as described and the car reaches the landing, then the cam C engages the friction roller N2 and pushes the swing arm N back into a vc=f1igal position, and, in doing so, the link L ajditie arm K turn the shaft J back to normal position, so that the arm I moves the fulcrum H2 to the left, that is, a swinging motion is given yto the lever .H with the pin P as the fulcrum, whereby the releasing bar G pushes the bolt D back into open position, thuis unlocking the door C and allowing opening of the same either for the egress or ingress of the passengers at this landing. When the releasing bar G is moved from the right to the left for unlocking the door, then the spring G2 releases the switch arm T so that the latter swings to the left by its own weight, thus breaking the contact between the contacts T and T2, and thereby cuttin oif the electric power for the car A. Now t 1e attendant in the car A cannot start the car, as the power is shut oflt by the switch, and, in order to close the latter, it is necessary that the door C be first swung shut. It is understood that when the door C is opened and the knob S is released, the arm R and the push bar Q, are returned to their normal position by the action of the spring R; and when the door is shut then the bolt D by the action of its spring D is shot out, thus pushing the releasing bar G back to its normal position, as shown in Fig. l, whereby a swinging motion is given to the lever H, to return the same to normal osition, as shown in Fig. l. Now the inwar movement of the releasing bar G causes the spring Gr2 to act on the switch arm T, with a view to move the same back into closed position. When this takes place, the car A can again be started by the attendant, in the usual manner.

From the foregoing it will be seen that by the arrangement described, the door C cannot be opened unless the car is at the landing, that is, the yknob S is turned and the cam O acts on the frictionl roller N2. It will also lbe noticed that the car cannot move away from the landing in either an upward or a downward direction unless the door C is again closed.

It is understood that the turning of the knob S does not unlock the door unless the ear cam O coacts at the same time, and the up and down movement of the car does not unlock the door when passing the landing, as the friction roller N2 is then in dormant position and is not moved into active position unless the knob S is turned.

-Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. An elevator door lock, comprising a locking device, normally locking the door against opening, a manual]y-controlled device on the door, and a car-controlled device normally in inactive position, adapted to be thrown into act-ive position by the said manually-controlled device, and adapted to be actuated 'by the car when in active position, the said manually-controlled device and the said car-controlled device being singly ineffective relative to the said locking device, and effective on the combined simultaneous action, to actuate the said locking device for unlocking the door.

2. An elevator door lock, comprising a locking device, normally locking the door against opening, a manually-controlled device on the door, a car-controlled device normally in inactive position, adapted to be thrown into active position by the said inanually-controlled device, and adapted to be actuated by the car when in active position, the said manually-controlled device and the said car-controlled device being singly ineffectivefrelative to the said" locking device and effective on the combined simultaneous action, to actuate the said locking device for unlocking the door, and an electric'switch for the car-hoisting mechanism and actuated by the combined simultaneous action of the said manually-controlled device and the said car-controlled device.

3. An elevator door lock, comprising a spring-pressed bolt on the door, normally engaging a keeper on the door casing to keep the door locked, car controlled means normally in inactive position, and adapted f ing the car'controlled means into active positionif to be by'ftheearwhen inactive positiont to move the bolt to unlock the door, and manually controlled means for throw-1 45. Anv elevator door lock, comprisingv a door bolt normally locking the door against opening, a releasing bar for moving the said bolt. into unlocking position, a llever con- '1.0 nected at one end with the said releasing bar,

'a'shaft mounted on the elevator shaft and having an arm on whichthesaid lever is ,iulcrumed, a striking bar :pivotall con- .,nect'ed with1 the' other end o`fthe sai lever,

i. a ,pfush bar adapted to engage the said striking bar, a door spindle connected with the 'said push `bar,a nd a'swing arm connected with the said sliaft,.-and.a cam on the car for engagingthe said swing arm at the time `the latter is in activeposition.

v 5. An el'evatoi' dooi` lock, comprising va door bolt normally locking the door against openingg-areleasing bar for moving thesaid the said shaft, and a-cambn the car 'for bolt into unlocking positioma lever connected at one end withithe-said releasin bar, a'shaft mounted on the elevator sha t and havingan yarm on which the said lever is fulcrurned,'a striking" ar pivotally con; nected with the other en `of thesaid lever, a push bar adapted to engage the said striking bar', 'a door spindle connected with th said/push bar, a swing armconnected `with engaging the said swing--ai'in'lat'th tiniethe latter is inactive positione'n' electric switch connected with the hoisting means forthe rar, and a yielding connection between the said releasing bar and the movable member of the switch. l

4o 6, An elevator door lock, comprising -a lock casing inv,the door, a keeper casing in 5o ing an the shaft, a. spring-pressd-bolt mounted in the said lock .,casing and normally engaging the said keeper casin a spindle mounted in thel lock casing an provided with door knobs and a springepressed arm, a push bar pivotally connected with the said arm and mounted tofslide in the said lock casing, a strikin bar mounted in the said keeper cass d in contactat one end with one end of 'the said msh bar, a shaft mounted to turn in the said teepe casing and providedgwith a carrying arm within the casing and with a.Y

rock arm extending in the elevator sh ft, a lever fulcrumed atits middle on thesaid carrying arm and pivotally connected t its upper end with the said striking bar, a releasing bar mounted in the said keeper casing and engaging the said bolt, the said releasing bar being pivotally connected with the lower end of the said lever, a swing ari'ii.

con-

fulcrumed on the elevator shaftan nected with vthe said rock arm, and a cam -on the. elevator car adapted to engage the said swing arm.

disnea` y a.v

'i'.l An elevator door lock, 'comprising ai' 1 lock casing in the vdo't'm,-afkee'p'er` casing in the shaft, a. spring-pressed* bolt mounted in .'thesaidlock casing and-normally engaging` y the said keeper casin ,'afspindle mounted in the lock casing and knobs andv a-spring-pressed arnna push bar pivotally connected with the saidjirm and l.mounted to slide in the said' lock casing, a strikin bar mounted in the said keeper casing an in contact at. one end with one end o the said push bar, a shaft mounted `totur n4`V in the said keeper casing and provided with -rock arm extending in the elevator shaft, -a lever fulcruined at its middle on the said leasing bar mounted in the said keeper cass.

ing and engaging the saidbolt, the said releasing bar being pivotally connected'with provided with door -a carrying arm within the casing and' with a 80'.

swinging arni and pivotallyconnected atit's, uppcrend with the said striking bar, al rethe lower end of the said lever, a swing larm i: fulcrum'edon the elevator shaft and 'conf nected with the said rock arm, a cam on' the 'eleva-tor car adapted to engage' the said hoisting'means, andaspring on the said releasing bar and engaginga movable member of the said switch.

8. In an elevator door lock, alock-ing de I vice normally locking the4 door against openy ing, a releasing device, for moving the said locking device into unlocked position,- car controlled means connected with the releasing device, the said car controlled means being normally in inactive position-and '.ada ted when in active'position to be actuate by the carto cause the releasing device Ato move the locking device to unlo'ck .the door, and manually controlled means for spring pressed boltoi'i the door, normally en, gaging a keeper on the door casing to keep the door locked, a releasing device in the keeper casing engaged by the bolt, a lever connected with the releasing device, a' car controlled means'connected with thelever and unlock the door,and manually controlled swing arm, an. electric switch for the cai 1 ioo' lmoving the said car controlled means into x for moving the said boltl into unlocking pof '10. An elevatordoor lock, comprising?) and adapted when in the active position' to be' actuated bythe car .to move said lever-toA i cause the releasing device to act on the bolti;

means for moving said leverto throw the lcar controlled means into active positiomthe said releasingdevlcerremalmng inactive underthe movement of the levei ,by vthe said# manually controlled means. 5 l1. In an elevator door lock, aI spring .l pressed bolt 'normally locking lthef'dqor against opening, e releasing bar"I engaged and movedby the bolt in one directin,"car oo ntrolledmeans for actuatingthe releasing 1'0 bar in the opposite direction to move the bolt to unlocked positior'nand anelectric switch foi` the oar hoisting mechanism controlled by the movement of the said releasing bar. y

In testimony whereof I have signed my 15 name to'this specification in the presence of two subscribing Witnesses.

EDWARD ERNEST ,SAPHORE Witnesses:

STEPHEN F. GLIMM, JAMES J; YOUNG.l 

